Spoke-mitering machine.



e. SCHERER;

SPOKE MITERING MACHINE.

APPLICATION FILED AUG-30. 19H]- 2 SHEETS-SHEET L INV EN TOR.

U WITNE GEORGE SCHEREE 114m a BY X ATTORNEYS.

Patented Apr. 16, 19l8,

G. SCHERER.

SPOKE MITERING MACHINE.

APPLICATION FILED AUG-30. 1910.

Patented Apr. 16', 1918.

2 SHEETS-8HEET 2.

IN Vi N TOR GEORGE SGT/BEER lg KM K g A TTORNIi YS.

( WITNESSES m,

pnrrnp STATES rare-Ni clarion.

Gnonen sonnnnn, or JACKSON, MICHIGAN, ASSIGNOB, To HAYES WHEEL COMPANY, or

JACKSON, MICHIGAN.

V SPOKE-MITERING MACHINE.

Patented Apr. 16, 1918.

Application filed August 30, 1916. Serial No. 117,714.

To all whom it may concern:

Be it known that I, GEORGE SCHERER, a citizen of the United States, residing at Jackson, Michigan, have invented certain new and useful Improvements in Spoke-Miterin Machines, of which the following is a speci cation.

This invention relates to improvements in spoke mitering machines.

The main objects of this invention are:

First, to provide an improved construction of work table for such mitering machine.

Second, to provide an improved construction of cross head and cutting means.

Third, to provide an improved means of retaining the spoke effectively in position to secure accurate formation of the mitered hub end of the spoke.

Further objects, and objects relating to details and economies of construction and operation will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the mechanism described in the following specification. The invention is clearly defined and ointed out in the claims. A preferred em odiment of my invention is illustrated in the accompanying drawing, forming a part of this specification, in which:

igure I is a side elevation of my improved spoke mitering machine, a portion of the same being cut away to show the adjusting means for the table.

Fig. II is a detail vertical section showing the train of the gearing from the driving pulley to the crank shaft, taken on the broken line 22 of Fig. I.

Fig. III is a front elevation of the machine, the lower part of which is broken away.

Fig. IV is a detail horizontal section showing the cross head and the standard taken on line 44 of Figs. I and III.

Fig. V is an inverted plan view of the cross head with the cutters and the cutter blocks arranged thereon.

Fig. VI is a top plan view of the table, showing the spoke positioning means on the same, with the position of the spoke shown by dotted lines.

Fig. VII is an enlarged partial detail vertical section through the cross head, showing the longitudinal adjusting means of the ported on the standard 1, is provided.

cutter carrying blocks, taken on line 77 of Fig. I.

Fig. VIII. is a detail vertical section through the tight and loose driving pulleys, showing the manner in which the shear pin is used in this machine, taken' on line 88 of Fig. I. r

In the drawing, similar numeralsof reference refer to similar parts throughout the several views, and the sectional views are taken looking in the" direction of the little arrows at the ends of the section lines.

The machine shown herein is adapted to bevel or miter the hub ends of the spokes after the same have been turned and prior to assembling the same into a wheel. The hub end prior to mitering is either square or rectangular in cross sectlon.

My machine consists of the upright standard 1 having an integral base 2. The work table 8 is pivotally mounted to he standard 1 on the pin 4, so that it may be readily tilted.

On the driving pulley shaft 5 is mounted tight and loose pulleys 6 and 7. The usual belt shifter, comprising a handled rod 40 provided with the fingers 30 suitably Sill}:-

6 driving shaft 5 is rigidly secured to the standard 1, and the driving pulley 7 is con? nected by means of pin 38 through flanges 37 to the driving pinion 8. The pinion 8 meshes with the intermediate driving gear '9. Gear 9 is connected to an intermediate driving pinion 10,the two gears turning on an intermediate shaft 11, said shaft being fixed in the standard 1. Pinion 10 meshes with the crank shaft gear 11 keyed to the rear end of crank shaft 12, which is journaled in the standard 1. At the front end of crank shaft 12 is securedly keyed the disk crank The disk crank 13 connects by a wrist pm 1 1, pitman 15 and pin 16 to the vertically reciprocating cross head 17. This cross head has a tongue on its rear face adapted to slide in the'dove-tail guides of the standard 1, see Fig. IV. The cross head pin 1s securely retained in a pair of cross head lugs 18, as shown. This cross head carries the reciproeating beveled cutter knives which cut the miters on the spokes. The knives areca-rried on adjustable knife carrying blocks 19, which are provided with dove-talled rules 19' which are engaged in suitable dove-tailed seats 17 on the under side of the cross head 17. hen the knife arrying blocks are adjusted, they are securely locked in position by set screws 17".

The knife holders 20 are provided with vertical bracket seats 21, on which are formed seats to receive the vertically reciprocating beveled knives 22. These knife holders are made identical and symmetrical, and each is pivoted to its carrying block 19 at 26, and its angle is adjustable by the set screw 27 disposed in the curved slot 28 in each said knife holder 20, see Fig. V. The knives are beveled on their back sides, or the sides toward the standard and have beveled cutting edges, as seen in Fig. I and HI.

The knife carrying blocks 19 are adjust able, as indicated,.the means for adjusting comprising the bracket 24, see Figs. I and VII, secured to the cross head 17, the same overhanging the end of the bl-ock l 9. Each isprovided with an adjusting screw 2-3 engaging in a screw-threaded bore in said block. Collars 25, 25 are on each screw 23, embracing the bracket 24, see Fig. VII, to hold the screw infixe d longitudinal relation and make it effective.

a From this explanation, it will be observed that the knives are adjustable to and from each other, and the angle of' the same can be sutficiently varied. to secure the proper mitering of any design of spoke now in practical use. The. knives, being tapered and beveled toward the hub end of the spoke, out the wood in a line of least re sistance and effectively trim the same to a perfect miter. j v

7 On the table 3 and within the angle formed by the knives is the cutter block 29. ()ntop of the table also is placed the small working table 30 which rests on suitable blocks 31. At the end of table 30 and near thecuttin block 29 is fastened a pair ofchine the hub end of the same is laid on the cutting block 29 and the head of the spoke is drawn against the guides 32 while the end of the barrel rests in the V-groove in the block 33, this position being shown with the spoke dotted in Fig. VI. When the machine is in operation and the knifc is reciprocating the same will slice off the portion of the hub end of the spoke required to give the necessary angle to the same for the assembling in the wheel.

. Thetable 3 is tilted about the pin 4t by a suitable elevating screw 34, supporting the vt ablefas shown ill Fig. I. Thehandfwhefel n the screw serves to manipulate the The lock-wheel nut 36 locks the The knives; 9 used are similar to those used in a. we d ivorker s trimmer. The blades have a rearward bevel as shown.

By forming the knives oblique at the back side and beveling their cutting edges and reciprocating them in substantially vertical relation to the cutting block 29, it is found that the knives have a drawing effect and force the head of the spoke against the guide stops 32, thus retaining the spoke effectively in position, while at the same time the knife cuts away the surplus wood alongthe line of least resistance, making a perfect fiat jointed surface. By varying the elevation of the outer or riin end of the spoke by tilting the table, the required dish can be given to the wheel. v

Because of the perfection of the action of the machine, all spokes are cut substantially alike and the necessity for any rasping or trimming of the wheel between the spokes to give a smooth finish in the completed wheel is entirely obviated, it only being necessary in some instances, to use a little sand paper to smooth the. surface.

I have illustrated and described my improvements in detail in the form in which I have embodied the same for use. I have not attempted to illustrate or describepo ssibl'e modifications and variations in structural details, as I believe the disclosure made will enable those skilled in the art to embody my improvements as conditions may require. I desire, however, to be understood as claiming my improvements specifically in the form illustrated as well as broadly as appear in the appended claims, n

Havingthus described my invention, what I claim as new and desire to secure by Let tei's Patent: I

1. In a spoke initering machine, the combination with a suitable standard, of a vertically reciprocating cross-head, pair of cutter knives carried thereby oblique on their rear sides and with beveled edgeaa work-table with a cutter block correspond ing to the head of the hub end of the said finished spoke, andstop meansjdisposedat each side of the spoketo engagethe enlargd ment toward the hub end at a point in close proximity to the plane of each of said cutting knives, coacting for the purpose specified. p p ,7 I j 2. In a spoke miteriiig machine,the combination with a suitable standard, a vertically reciprocating cross head, apafir of cutter knives carried thereby oblique on their rear sides and with beveled edges, -a work table with a cutter block correspond ing to the head of the hub end of the said finishedspoke, and stop eans-ragweed "t each side of the spo'keto engagethe enlan m ent towardthehub end, coactin'g fbrthe P p'o pe fie endmiter-ins ech es. the f with a. suitable standard, 'a t e-rtically reciprocating; cross head, a air of cutter knives carried thereby, a wor table with a cutter block corresponding to the head of the hub end of the said finished spoke, and stop means disposed at each side of the spoke to engage the enlargement toward the hub end, coacting for the purpose specified.

4. In a spoke Initering machine, the combination with a suitable standard, of a Vertically reciprocating cross-head, a pair of adjustable cutter knives carried thereby oblique on their rear sides and with beveled edges a work-table with a cutter block corresponding to the head of the hub end of the said finished spoke, and stop means disposed at each side of the spoke to engage the enlargement toward the hub end at a point .in close proximity to the plane of each of said cutting knives, 'coacting for the purpose specified.

In witness whereof I have hereunto set my hand and seal in the presence of two Copies of this patent may be obtained for five cents each, by addressing the "commissioner of Patents,

Washington, I). 0. 

